This garage door remote control is a replacement remote, not an original accessory. It is compatible with Security+2.0 models including Liftmaster TX4 series and Merlin+ 2.0 Exxx series such as E945 960M. Compatible with Security+ models including Liftmaster 8xxx and 9xxx series such as 84335 and 94335, Merlin+ Cxxx series such as C945, and Glifco + CMxxx series such as CM842. Compatible with Billing Code models including Liftmaster 4xxx series such as 4335E and B&D. Also compatible with MotorLift 500, ML500, 700, ML700, 750, ML750, 850, ML850, LM600, LM-600, LM600A, LM800. Works with MERLIN models C840, C940, C943, C945, CM842, CM844, CM128, E945 960M. Compatible with Chamberlain, Liftmaster, and Motorlift models 84330E, 84333E, 84335E, 8747E, 84330EML, 84333EML, 94330E, 94333E, 94334E, 94335E and others. Check full compatibility list in product images. Supports up to 3 garage door openers or gates with green LED indicator. Features rolling code technology for enhanced security. Compact 3-button design fits easily on a keychain, bag, or backpack. Includes metal keychain for convenient carrying. Package includes 1 metal reinforced key fob, 1 garage door opener remote control, and 1 clear programming manual. Backed by excellent after-sales service and a 100% money-back return guarantee within 90 days.